Division of Agriculture and Natural Resources
Division of Agriculture and Natural Resources
Division of Agriculture and Natural Resources
University of California
Division of Agriculture and Natural Resources

Dr Lucia G. Varela Ph.D.

North Coast IPM Advisor
UC Cooperative Extension
133 Aviation Boulevard
Suite 109
Santa Rosa, CA 95403-2894
(707) 565-2621
lgvarela@ucanr.edu Create VCard

Also in:
Statewide IPM Program
Napa County
Lake County
Mendocino County

Education

Ph.D Entomology, UC Berkeley. 1990
M.S. Entomology, UC Berkeley. 1986
B.S. Biochemistry, UC Los Angeles. 1982

Specialty

Apples, pears, wine grapes, pest management

Areas of Expertise (click to see all ANR academics with this expertise)

Bibliography

Peer Reviewed

  • Varela, L.G.; Haviland, D.R., et al. (2015) Insects and mites. UC IPM Pest Management Guidelines: Grape. Univ. Calif. Div. Agric. Nat. Res. Publ: 3448 (revision from 2006),
  • Ingels, C.; Varela, L. G. (2014) Brown marmorated stink bug. Pest Notes. UC ANR Publication 74169: 4 pp
  • Cooper, M.L.; Varela, L.G., et al. (2014). "Growers, scientists and regulators collaborate on European grapevine moth program." California Agriculture 68(4): 125-133.
  • Bethke, J.A.; Dreistadt, S.H., et al. (2014) Thrips. In Pest Notes. UC ANR Publication 7429: 8 pp
  • Varela, L.G. (2013). Adult male mealybug identification. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (39) 261-263.
  • Varela, L.G. (2013). Aphids. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (29) 186.
  • Bettiga, L.J.; Varela, L.G., et al. (2013). Brown marmorated stink bug. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (30) 187-188.
  • Varela, L.G.; Cooper, M.L, et al. (2013). "Can European grapevine moth, Lobesia botrana (Lepidoptera: Tortricidae) be eradicated from California?" IOBC-WPRS Bulletin 85: 95-102.
  • Varela, L.G.; Bentley, W.J., et al. (2013). Citrus flat mite (false spider mite). Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (76) 398.
  • Varela, L.G.; Cooper, M.L., et al. (2013). European grapevine moth. Grape Pest Management Manual.L. Bettiga. Univ. of Calif. Div. Agric. Nat. Res. 3343.: (66) 346-351.
  • Varela, L.G.; Bentley, W.J., et al. (2013). Grape erineum mite. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (77) 399-402.
  • Varela, L.G.; Bentley, W.J., et al. (2013). Grape erineum mite. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (77) 399-402.
  • Perring, T.M.; Varela, L.G (2013). Grape rust mite. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (78) 403-404.
  • Varela, L.G; Weber, E.A., et al. (2013). Grape whitefly. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (47) 288-290.
  • Varela, L.G.; Lucchi, A., et al. (2013). "Impacts of standard wine-making process on the survival of Lobesia botrana larvae (Lepidoptera: Tortricidae) in infested grape clusters." J. Econ. Entomol 106(6): 2349-2353.
  • Varela, L.G. (2013). Katydids. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. Calif. Div. Agric. Nat. Res. Publ. 3343.: (26) 179-180.
  • Bettiga, L.J.; Varela, L.G. (2013). Larvae found in grape clusters. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (62) 335-336.
  • Bettiga, L.J.; Varela, L.G. (2013). Light brown apple moth. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (68) 360-363.
  • VanSteenwyk, R.A.; Varela, L.G., et al. (2013). "Monitoring and control of European grapevine moth, Lobesia botrana (Lepidoptera: Tortricidae) in California vineyards." IOBC-WPRS Bulletin 85: 177-186.
  • Bettiga, L.J.; Varela, L.G., et al. (2013). Orange tortrix. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (70) 372-377.
  • Purcell, A.H.; Kirkpatrick, B.C., et al. (2013). Pierce's disease. Grape Pest Management Manual. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (9) 75-82.
  • Varela, L.G; Daane, K.M., et al. (2013). Scale insects. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (44) 273-276.
  • Varela, L.G; Smith, R.J, et al. (2013). Sharpshooters. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (45) 277-285.
  • Zalom, F.G; Bentley, W.J., et al. (2013). Spider mites.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (79) 405-421.
  • Varela, L.G; Daane, K.M. (2013). Virginia creeper leafhopper. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (36) 235-236.
  • Ioriatti, C.; Lucchi, A., et al. (2012). Grape berry moths in Western European vineyards and their recent movement into the New World. Arthropod Management in Vineyards: Pests, Approaches, and Future Directions.N. Bostanian, C. Vincent and R. Isaacs. Springer.: 339-360.
  • Varela, L.G.; Elkins, R.B., et al. (2012). Insects and mites. UC IPM Pest Management Guidelines: Pear. Univ. Calif. Div. Agric. Nat. Res. Publ. 3455
  • Varela, L.G.; Bentley, W.J. (2012). Tarjetas de indentificación y monitoreo de plagas de la vid. Calif. Div. Agric. Nat. Res. Publ. 3538: 50 pp.
  • Varela, L.G.; Elkins, R.B., et al. (2011). Evolution of Secondary Pests in California Pear Orchards under Mating Disruption for Codling Moth Control. Proc. 11th International Pear Symposium, Acta Hort. 909, ISHS: 531-542.
  • Varela, L.G.; Bentley, W.J. (2011). Vineyard pest identification and monitoring cards. Calif. Div. Agric. Nat. Res. Publ. 3532: 50 pp.
  • Varela, L.G.; Walker, J.T.S., et al. (2010). "New Zealand Lessons May Aid Efforts to Control Light Brown Apple Moth in California." California Agriculture 64(1): 6-12.
  • Varela, L.G.; Elkins, R.B. (2008). "Conversion from use of organophosphate insecticides to codling moth mating disruption in California Pear Orchards." Acta Hort 800, ISHS 955-960
  • Varela, L.G.; Johnson, M.W., et al. (2008). "Light brown apple moth's arrival in California worries commodity groups." California Agriculture 62(2): 57-61.
  • Cooper, M.L.; Daane, K.M., et al. (2008). "Liquid baits control Argentine ants sustainably in coastal vineyards." California Agriculture 62(4): 177-193.
  • Smith, R.J.; Varela, L.G. (2008). "Pomace management reduces spread of vine mealybug. In: Vineyard managers and researchers seek sustainable solutions for mealybugs, a changing pest complex." California Agriculture 62(4): 172-173.
  • Bentley, W.J.; Varela, L.G., et al. (2007). Grapes, insects, ecology and control. Encyclopedia of Pest Management.D. Pimentel. New York, Taylor and Francis Group, LLC.
  • Van Steenwyk, R.A.; Varela, L.G., et al. (2007). Insects and mite pests. California Pear Production and Handling Manual.E. Mitcham and R. Elkins. Univ. Calif. Div. Agric. Nat. Res. Publ. 3483: 135-144.
  • Bentley, W.J.; Varela, L.G., et al. (2006). Insects and mites. UC IPM Pest Management Guidelines: Grape. Univ. Calif. Div. Agric. Nat. Res. Publ. 3448
  • Varela, L.G.; Bentley, W.J., et al. (2005). Grapes, Insects, Ecology and Control. Encyclopedia of Pest Management.D. Pimentel. New York, Taylor & Francis Group, LLC.
  • Dahlsten, D.L.; Daane, K.M., et al. (2005). "Imported Parasitic Wasp Helps Control Red Gum Lerp Psyllid." California Agriculture 59(4): 229-234.
  • Bentley, W.J.; Zalom, F., et al. (2003). Insects and mites. UC IPM Pest Management Guidelines: Grape. Univ. Calif. Div. Agric. Nat. Res. Publ. 3448
  • Caprile, J.L.; Varela, L.G., et al. (2002). Insects and mites. UC IPM Pest Management Guidelines: Apple. Univ. Calif. Div. Agric. Nat. Res. Publ. 3432
  • Varela, L.G.; Wilen, C.A. (2001). Glassy-Winged Sharpshooter Identification and Monitoring/Identificación y Monitoreo de la Chicharrita de Alas Cristalinas. Calif. Div. Agric. Nat. Res. Publ. V01-A
  • Phillips, P.A.; Wilen, C.A., et al. (2001). "Glassy-winged Sharpshooter; Integrated Pest Management for Home Gardeners and Landscape Professionals." UC IPM Pest Notes Publ. 7492: 4 pp.
  • Varela, L.G.; Smith, R.J., et al. (2001). Pierce's disease. Univ. Calif. Div. Agric. Nat. Res. Publ. 21600: 20 pp.
  • Varela, L.G. (2000). Disease and Pest Management. Organic Apple Production Manual.S. Swezey. Univ. Calif. Div. Agric. Nat. Res. Publ. 3404: 19-43.
  • Caprile, J.L.; Elkins, R.B., et al. (1999). Integrated Pest Management for Apples and Pears. Oakland: Univ. Calif. Div. Agric. Nat. Res. Publ. 3340: 231.
  • Andreasen, J.; Varela, L.G. (1999). Pesticide Disposal in Developing Countries. A training Module. U.S. Environmental Protection Agency International Training Module.
  • Varela, L.G.; Shearer, P.W., et al. (1997). "Monitoring of Insecticide Resistance in Phyllonorycter mespilella (Lepidoptera: Gracillariidae) in four Western states." J. of Econ. Entomol 90(2): 252-260.
  • Varela, L.G.; Cowles, R.S., et al. (1996). "Spring Insecticide Treatments Control Adelgids on Douglas Fir." California Agriculture 80(5): 34-37.
  • Vossen, P.; Desmond, J., et al. (1994). "Disease, Insect Pressures Make Organic Production Risky in Sonoma County." California Agriculture 48(6): 29-36.
  • Shearer, P.W.; Varela, L.G., et al. (1994). "Topical Pheromone Trap Assay for Monitoring Insecticide Resistance of Phyllonorycter elmaella (Lepidoptera: Gracillariidae)." J. Econ. Entomol 87(6): 1441-1449.
  • Varela, L.G.; Welter, S.C., et al. (1993). "Monitoring and Characterization of Insecticide Resistance in Codling Moth (Lepidoptera: Tortricidae) in Four Western States." J. Econ. Entomol 86(1): 1-10.
  • Varela, L.G.; Welter, S.C. (1992). "Parasitoids of the Leafminer, Phyllonorycter nr. elmaella (Lepidoptera: Gracillariidae), on apple in California: abundance, impact on leaf miner, and insecticide-induced mortality." Biological Control 2(2): 124-130.

Non-Peer Reviewed

  • Cooper, M.L.; Varela, L.G. (2015). Arboreal camel cricket: identification and damage. Grower Advocate newsletter, Napa County Farm Bureau. Summer: 9-10.
  • Dreistadt, S.H.; Niño, E.L., et al. (2015). "Bee precaution pesticide rating." 2015, from http://www2.ipm.ucanr.edu/beeprecaution/.
  • Wilson, H.; McGourty, G., et al. (2015). Biological control of the Virginia creeper leafhopper (Erythroneura ziczac Walsh), a new invasive pest in northern California vineyards. Abstracts of the 99th Annual Meeting of the Pacific Branch Entomol. Soc. of Am, Coeur d'Alene, ID.
  • Varela, L.G.; Smith, R.J. (2015). Help prevent the re-introduction of European grapevine moth. Sonoma-Marin Farm News. Sonoma County Farm Bureau. December: 17.
  • Varela, L.G.; McGourty, G. (2015). Leafhopper control using OMRI-approved insecticides. Sonoma County UCCE Publication.: 4 pp.
  • Cooper, M.L.; Varela, L.G. (2015). Manage vine mealybug early this season. American Vineyard. 24(5): 24-27.
  • Varela, L.G.; Carlo, C. (2015). Monitoring and control of European grapevine moth, Lobesia botrana. Annual Accomplishment Report for USDA APHIS Cooperative Agreement 14-8130-0380-CA.: 19 pp.
  • Cooper, M.L.; Varela, L.G. (2015). Monitoring the fall migration of grape erineum mite (Colorers vitas) and implications for management. Abstracts of the 99th Annual Meeting of the Pacific Branch Entomol. Soc. of Am, Coeur d'Alene, ID.
  • Daugherty, M; Cooper, M.L., et al. (2015). Pogress made on control of European grapevine moth: present status and next steps. CAPCA Adviser Magazine. December, 18(6): 54-56.
  • Lance, D.; Cooper, M.L., et al. (2015). Report of the International Technical Working Group for the European grapevine moth. USDA APHIS, November 2.: 12 pp.
  • Cooper, M.L.; Varela, L.G. (2015). The migration of erineum mites to overwintering sites in North Coast vineyards. American Vineyard. 24(2): 8-11.
  • Varela, L.G.; Cooper, M.L., et al. (2015). Update on the Lobesia botrana Program in California. In Abstracts of Integrated Protection and Production in Viticulture, IOBC/WPRS Working Group. p. 43, Vienna, Austria.
  • Cooper, M.L.; Varela, L.G. (2015). Vine mealybug management: frequently asked questions. Grower Advocate newelstter, Napa County Farm Bureau. Spring: 9-10.
  • Varela, L.G.; Cooper, M.L. (2014). Grape erineum mite in North Coast vineyards. CAPCA Adviser Magazine. XVII(6): 34-38.
  • Varela, L.G. (2014). Informe de las visitas a Chile por Lobesia botrana. Reports to the Ministry of Agriculture, Chile.: April 30 & July 31.
  • Ingels, C.; Van Steenwyk, R., et al. (2014). Phenology and distribution of brown marmorated stink bugs in California pear orchards. California Pear Research Report. Sacramento, California Pear Advisory Board.
  • Lance, D.; Bagnoli, B., et al. (2014). Report of the Technical Working Group for the European grapevine moth. USDA APHIS, October 22.: 20 pp.
  • Abrams, A.E.; Kane, S.M., et al. (2013). A rearing method for European grapevine moth, Lobesia botrana, (Lepidoptera: Tortricideae) inside the UC Davis Contained Research Facility, a BSL-III-Plant Quarantine. In abstracts of the 97th Ann. Meeting of the Pacific Branch Entomol. Soc. of Am, South Lake Tahoe, NV.
  • Varela, L.G.; Smith, R.J., et al. (2013). "Brown marmorated stink bug, Halyomorpha halys, identification and comparison to consperes stink bug adult, Euschistus conspersus." UCCE Sonoma County You Tube Videos 2:59 minutes, from http://ucanr.edu/brown marmorated stink bug video.
  • Smith, R.J.; Cooper, M.L., et al. (2013). Determining survival of Lobesia botrana larvae in grapes processed for wine making to evaluate the risk of dispersal. In abstracts of the Ann. Conf. of the Am. Soc. Hortic. Sci, Palm Dessert, CA.
  • Varela, L.G.; Cooper, M.L. (2013). Monitoring and control of European grapevine moth, Lobesia botrana. Report to USDA APHIS.: 9 pp.
  • McGourty, G.; Varela, L.G. (2013). New leafhopper found in Mendocino and Lake County vineyards. Adviser Magazine. Sacramento, CAPCA. XVI (1): 25-28.
  • Lucchi, A.; Bagnoli, B., et al. (2013). Pheromone-based strategies in the management of the recent introduction of Lobesia botrana in California. Abstracts of the Future IPM in Europe Conference, Riva del Garda, Italy. p.106.
  • Smith, R.J.; Cooper, M.L., et al. (2013) Preventing spread of Lobesia botrana in grapes processed for winemaking. Practical Winery & Vineyard August, p. 73
  • Mastro, V.; Cardé, R., et al. (2013). Report of the Technical Working Group for the European grapevine moth. USDA APHIS. September 27.: 10 pp.
  • Varela, L.G.; Cooper, M.L., et al. (2013). Trapping for European grapevine moth. Adviser Magazine, June. Sacramento, CAPCA. XVI (3): 20-25.
  • Varela, L.G.; Cooper, M.L., et al. (2013). Update of the European grapevine program in California. In Abstracts of the International Workshop on Lobesia botrana: an old world pest on the move, Tel Hai, Israel. p.9.
  • Varela, L.G.; Cooper, M.L., et al. (2013). Update on the Lobesia botrana program in California. In Abstracts of Integrated Protection and Production in Viticulture, IOBC/WPRS Working Group, Ascona, Switzerland. p.57.
  • Varela, L.G.; R.J., Smith, et al. (2013). Virginia creeper leafhopper, a new leafhopper pest of grapes in out region. Sonoma-Marin Farm News. Sonoma County Farm Bureau. July: p.14.
  • Varela, L.G.; Elkins, R., et al. (2012). "Brown marmorated stink bug." Pest Alert from http://www.ipm.ucdavis.edu/PDF/pestalert/brownmarmoratedstinkbug.pdf.
  • Varela, L.G.; Cooper, M.L. (2012). Burn local. Grower Advocate Newelstter. Napa County Farm Bureau. Winter
  • Varela, L.G.; Elkins, R., et al. (2012). "Chinche apestosa marrón marmorea." Pest Alert from http://www.ipm.ucdavis.edu/PDF/pestalert/brownmarmoratedstinkbugsp.pdf.
  • Varela, L.G; Smith, R.J (2012). "European fruit lecanium, Parthenolecanium corni. 1) Introduction and life cycle; 2) monitoring." UCCE Sonoma County You Tube Videos 1:50 & 2:40 minutes, from http://ucanr.edu/european fruit lecanium scale videos.
  • Cooper, M.L.; Varela, L.G., et al. (2012). European grapevine moth (Lobesia botrana) in California: Treatment timing for the 1st generation applications in 2012. Grower Advocate newelstter. Napa County Farm Bureau. Winter
  • Cooper, M.L.; Varela, L.G., et al. (2012). European grapevine moth (Lobesia botrana): the California experience. Abstracts of the 96th Ann. Meeting of the Pacific Branch Entomol. Soc. Am, Portland, Or.
  • Varela, L.G.; Cooper, M.L. (2012). European grapevine moth, Lobesia botrana, (Lepidoptera: Tortricidae) eradication program in California. Western Front Newsletter. Davis, Western Integrated Pest Management Center. October: 4-5.
  • Varela, L.G.; Cooper, M.L., et al. (2012). Initial response to European grapevine moth, Lobesia botrana, in North America. Poster Abstracts of the 7th International IPM Symposium. Memphis, TN,: p.91.
  • Varela, L.G.; Smith, R.J., et al. (2012). "Leafhoppers in Northern California vineyards: Western grape leafhopper, Erythroneura elegantula, and Virginia creeper leafhopper, Erythroneura ziczac, identification." UCCE Sonoma County You Tube Videos 4:32 minutes, from http://ucanr.edu/leafhoppers in northern california vineyards.
  • Varela, L.G.; Cooper, M.L., et al. (2012). Monitoring and control of European grapevine moth, Lobesia botrana. Report to USDA APHIS.: 5 pp.
  • Mastro, V.; Carde, R.T., et al. (2012). Report of the Technical Working Group for the European grapevine moth. USDA APHIS. November 1: 9 pp.
  • Varela, L.G; Smith, R.J (2012). "Spring monitoring techniques for grape mealybug, Pseudococcus maritimus." UCCE Sonoma County You Tube Videos 2:09 minutes, from http://ucanr.edu/gmb spring monitoring video.
  • Lucchi, A.; Bagnoli, B., et al. (2012). The successful use of sex pheromones to monitor and disrupt mating of Lobesia botrana in California. Abstracts of Pheromones and Other Semio-chemicals in Integrated Production, Bursa, Turkey, IOBC/WPRS Working Group.
  • Varela, L.G.; Cooper, M.L., et al. (2012). Update on the European grapevine moth, Lobesia botrana (Lepidoptera: Tortricidae) control program in California. Proceedings of the 86th Orchard Pest Management Conference. Portland, OR,: 60.
  • Varela, L.G.; Smith, R.J. (2012). "Western grape leafhopper, Erythroneura elegantula, identification, life cycle and monitoring." UCCE Sonoma County You Tube Videos 4:20 minutes, from http://ucanr.edu/leafhoppers in northern california vineyards.
  • Smith, R.J.; Varela, L.G., et al. (2011). "An investigation of the fate of Lobesia botrana (Lepidoptera: Tortricidae) in infested clusters processed for winemaking." Am. J. Enol. Vitic 62(3): 409a.
  • Bettiga, L.J.; Smith, R.J., et al. (2011). Be Alert! European grapevine moth; Atención! La palomilla europea del racimo. Davis, CA, UC Statewide IPM Poster Publication.
  • Varela, L.G.; Cooper, M.L., et al. (2011). Can European grapevine moth, Lobesia botrana (Lepidoptera: Tortricidae) be eradicated from California? Abstracts of the Integrated Protection and Production in Viticulture. Lacanau, France, IOBC/WPRS Working Group.: 23.
  • Varela, L.G.; Cooper, M.L. (2011). Comparison of pheromone lures, bait traps and trap design to monitor European grapevine moth, Lobesia botrana, adults in vineyards. Report to USDA APHIS.: 14 pp.
  • Varela, L.G. (2011). Controlling European grapevine moth: Lessons learned in the first year. UCCE Sonoma County Video Publication.: 23 minutes.
  • Varela, L.G.; Cooper, M.L., et al. (2011). Degree-day accumulations used to time Insecticide treatments to control 1st generation European grapevine moth. Sonoma County UCCE Publication.: 4 pp.
  • Smith, R.J.; Varela, L.G., et al. (2011). European Grapevine Moth, Lobesia botrana. Trifold. UC Statewide IPM Publication.: 2 pp.
  • Cooper, M.L.; Varela, L.G., et al. (2011). European grapevine moth, Lobesia botrana, the Napa County experience; lessons learned in 2010. Practical Winery and Vineyard Journal. Spring: 1-2.
  • Varela, L.G.; Cooper, M.L. (2011). European grapevine moth: Continued monitoring is critical. Grower Advocate Newsletter. Napa County Farm Bureau. Fall
  • Varela, L.G.; Bettiga, L.J., et al. (2011). Guide to the Moths and Worms in Grapevine Clusters in California. Pest Guide. UC Statewide IPM Publication.: 2 pp.
  • Varela, L.G.; Van Steenwyk, R.A. (2011). Lessons learned in the first year of control of European grapevine moth, Lobesia botrana (Lepidoptera: Tortricidae) in California vineyards. Proceedings of the 85th Annual Orchard Pest and Disease Management Conference. Portland, OR,: 47.
  • Smith, R.J.; Varela, L.G., et al. (2011). Looking for Lobesia botrana in infested clusters processed for wine making. Sonoma County UCCE Report. February 23, 2011.: 2 pp.
  • Varela, L.G.; Cooper, M.L., et al. (2011). Monitoring and control of European grapevine moth, Lobesia botrana. Report to USDA APHIS.: 11 pp.
  • Van Steenwyk, R.A.; Varela, L.G., et al. (2011). Monitoring and control of European grapevine moth, Lobesia botrana (Lepidoptera: Tortriciade) in California vineyards. Lacanau, France, IOBC/WPRS Working Group.: 48.
  • Varela, L.G.; Cooper, M.L., et al. (2011). Monitoring and control of European grapevine moth, Lobesia botrana (Lepidoptera: Tortricidae) in California vineyards. Abstracts of the 95th Ann. Meeting of the Pacific Branch Entomol. Soc. Am. Waikoloa, HW,: 125.
  • Varela, L.G.; Elkins, R.E. (2011). New pest threat in orchards: Brown marmorated stink bug. Adviser Magazine. Sacramento, CAPCA. June: 32-33.
  • Cooper, M.L.; Varela, L.G. (2011). Registered insecticides for European grapevine moth (EGVM), Lobesia botrana on grape. UCCE County publication.: 4 pp.
  • Lance, D.; Cardé, R., et al. (2011). Report of the Technical Working Group for the European grapevine moth. USDA APHIS. December 15: 9 pp.
  • Varela, L.G. (2011). Table of degree-day accumulations for European grapevine moth in selected locations in California. Sonoma County UCCE Publication.: 1 pp.
  • Cooper, M.L.; Varela, L.G. (2011). "The status of the European grapevine moth (EGVM) eradication effort in California; no reported crop losses in 2010." Western Plant Diagnostic Network 3(4): 3-5.
  • Varela, L.G.; Smith, R.J., et al. (2011). Timing insecticide treatments for European grapevine moth. Adviser Magazine. Sacramento, CAPCA. April: 18-22.
  • Varela, L.G. (2010). European grapevine moth, Lobesia botrana. Sonoma County UCCE Publication.: 2 pp.
  • Varela, L.G.; Smith, R.J., et al. (2010). "European grapevine moth, Lobesia botrana." Practical Winery & Vineyard March/April: 1-5.
  • Cooper, M.L.; Varela, L.G., et al. (2010). European grapevine Moth: a new pest of grapes in California. Adviser Magazine. Sacramento, CAPCA. August: 20-28.
  • Varela, L.G.; Elkins, R.B., et al. (2010). Evolution of secondary pests in California pear orchards under mating disruption for codling moth control. Abstracts XI International Pear Symposium, Neuquen, Argentina, Int. Soc. Hort. Sci. p. 109.
  • Varela, L.G. (2010). First report in the United States of European grapevine Moth, Lobesia botrana (Lepidoptera: Tortricidae) in Napa Valley vineyards. Proceedings of the 84th Orchard Pest & Disease Management Conference. p. 23, Portland, OR.
  • Varela, L.G. (2010). First report in the United States of European grapevine moth, Lobesia botrana in California. Proceedings of the 6th International Table Grape Symposium. p. 77-78, Davis, CA.
  • Mastro, V.; Bagnoli, B., et al. (2010). First report of the International Technical Working Group for the European grapevine moth (EGVM) in California. USDA APHIS, February 10.: 10 pp.
  • Varela, L.G.; Cooper, M.L., et al. (2010). Identification of tortricid moths in California vineyards. Adviser Magazine. Sacramento, CAPCA. 13 (5): 24-29.
  • Varela, L.G.; Smith, R.J. (2010). Insecticide control of vine mealybug in California vineyards. Abstracts of the 94th Ann. Meeting of the Pacific Branch Entomol. Soc. Am. Boise, ID,: p. 114.
  • Varela, L.G. (2010). La polilla del racimo de la vid, Lobesia botrana. Sonoma County UCCE Publication.: 1 pp.
  • Varela, L.G. (2010). La polilla del racimo de la vid, Lobesia botrana. Sonoma County UCCE Video Publication.: 6.29 minutes.
  • Varela, L.G.; Walker, J.T.S., et al. (2010). "New Zealand can help California control leafroller." Fruit Grower News March 2010
  • Mastro, V.; Carde, R.T., et al. (2010). Second report of the International Technical Working Group for the European grapevine moth in California. USDA APHIS, May 4.: 6 pp.
  • Smith, R.J.; Varela, L.G. (2010). "Solarization of winery waste can prevent spread of vine mealybug." UC Delivers: Grapes/Wine
  • Varela, L.G. (2010). Status of light brown apple moth, Epiphyas postvittana (Lepidoptera: Tortricidae) in California. Proceedings of the 84th Orchard Pest & Disease Management Conference p. 24, Portland, OR.
  • Mastro, V.; Cardé, R.T., et al. (2010). Third report of the International Technical Working Group for the European grapevine moth in California. USDA APHIS, December 7.: 7 pp.
  • Varela, L.G. (2010). Tortricid moths in California vineyards. Sonoma County UCCE Publication.: 2 pp.
  • Smith, R.J.; Varela, L.G. (2010). Treating the first generation of Lobesia botrana (EGVM) in a quarantine area. Sonoma County UCCE Publication.: 4 pp.
  • Smith, R.J.; Varela, L.G. (2010). Treating the second generation of Lobesia botrana. Sonoma County UCCE Publication.: 2 pp.
  • Smith, R.J.; Varela, L.G. (2010). Treating the third generation of Lobesia botrana. Sonoma County UCCE Publication.: 1 pp.
  • Varela, L.G.; Grafton-Cardwell, E., et al. (2009). A survey of predacious mites (Acari: Phytoseiidae) in North Coast California vineyards. IOBC 3rd International Symposium on Biological Control of Arthropods. Christchurch, New Zealand,
  • Ingels, C.; Elkins, R.B., et al. (2009). Control of codling moth by post-harvest application of Ethephon 2SL. California Pear Research Report. Sacramento, California Pear Advisory Board.
  • Zalom, F.; Varela, L.G., et al. (2009) European grapevine moth, Lobesia botrana: A new pest in California. UC IPM Online (updated 2011),
  • Van Steenwyk, R.A.; Kiss, A.B., et al. (2009). "Phylloxera control in grapes with systemic neonicotinoids." Arthropod Management Tests 35: C15.
  • Smith, R.J.; Varela, L.G. (2009). Vine mealybug control trial 2009. Sonoma County UCCE Publication.: 10 pp.
  • Varela, L.G. (2008). A survey of predacious mites (Acari: Phytoseiidae) in North Coast California vineyards. Abstracts of the 91st Pacific Branch Entomol. Soc. of Am. Napa, CA,: p. 44.
  • Elkins, R.B.; Varela, L.G. (2008). "Codling moth mating disruption in North Coast pear orchards." CAPCA Adviser Magazine 11(8): 72-75.
  • Varela, L.G. (2008). Efficacy studies of Movento on grape mealybug and grape phylloxera. Proceedings of the 82nd Orchard Pest and Disease Management Conference, Portland, OR.
  • Varela, L.G.; Smith, R.J. (2008). Grape and vine insecticide control trials. Sonoma County UCCE Publication.: 6 pp.
  • Van Steenwyk, R.A.; Varela, L.G., et al. (2008). "Grape phylloxera control in grapes with Movento." Arthropod Management Tests 34: C18.
  • Varela, L.G. (2008). Leafrollers in vineyards. Sonoma County UCCE Publication.: 2 pp.
  • Varela, L.G. (2008). Monitoring and controlling katydids in pear orchards. California Pear Research Report. Sacramento, California Pear Advisory Board.: 51-61.
  • Varela, L.G. (2008). Western grapeleaf skeletonizer: Look for this moth and the leaf damage it causes. Sonoma County UCCE Publication.: 1 pp.
  • Varela, L.G.; Elkins, R.B (2007). Conversion from organophosphate insecticides to mating disruption in California pear orchards. Proceedings of the 10th International Pear Symposium, Peniche, Portugal, Int. Soc. Hort. Sci. p. 83.
  • Varela, L.G. (2007). Grape leaf skeletonizer fact sheet. Sonoma County UCCE Publication.: 2 pp.
  • Varela, L.G.; Smith, R.J. (2007). Grape mealybug insecticide trials. Sonoma County UCCE Publication.: 4 pp.
  • Varela, L.G. (2007). Gusano presidiario de la vid fact sheet. Sonoma County UCCE Publication.: 1 pp.
  • Varela, L.G. (2007). Katydid damage, biology and control in California pear orchards. Proceeding of the Orchard Pest and Disease Management Conference 81st Annual Meeting, Portland, OR.
  • Johnson, M.W.; Pickel, C., et al. (2007). Light brown apple moth in California: quarantine, management, and potential impacts. Davis, UC IPM Fact Sheet.: 21 pp.
  • Varela, L.G. (2007). Male vine mealybug identification sheet. Sonoma County UCCE Publication.: 3 pp.
  • Varela, L.G. (2007). Monitoring and controlling katydids in pear orchards. California Pear Research Report. Sacramento, California Pear Advisory Board.: 1-9.
  • Grafton-Cardwell, E.M.; Hoddle, M., et al. (2007). Survey of predacious mites in California agriculture and training in identification. Final report to UC Statewide IPM Program.: 14 pp.
  • Varela, L.G.; Smith, R.J. (2006). Fate of vine mealybug Planococcus ficus (Signoret) in winery waste. Abstracts 5th National IPM Symposium. St. Louis, MO,: p. 86.
  • Varela, L.G.; Smith, R.J., et al. (2006). Grape, obscure or vine: which mealybug is it, why should you care? Practical Winery and Vineyard Magazine. January/February: 37-46, 125.
  • Varela, L.G. (2006). Monitoring and control of katydids and Diabrotica in Pear orchards. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 1-12.
  • Smith, R.J.; Varela, L.G. (2006). Monitoring vine mealybug with pheromone traps in California North Coast vineyards. UCCE Sonoma County Publication.: 1 pp.
  • Varela, L.G. (2006). Piojos harinosos en viñedos de California. UCCE Sonoma County Publication.: 2 pp.
  • Varela, L.G.; Smith, R.J. (2006). Seasonal development of grape, obscure and vine mealybugs of the North Coast. UCCE Sonoma County Publication (revision of 2005).: 2 pp.
  • Varela, L.G. (2005). Grape and vine mealybug life cycle in the North Coast. UCCE Sonoma County Publication.: 1 pp.
  • Varela, L.G. (2005). La enfermedad de Pierce en California. Actas del II Seminario Internacional de Viticultura, Ensenada, MX, INIFAP SAGARPA.
  • Varela, L.G. (2005). Male vine mealybug and other small insects caught on pheromone traps Identification Sheets. UCCE Sonoma County Publication.: 2 pp.
  • Smith, R.J.; Varela, L.G. (2005). "Managing vine mealybug in winery waste." Wine Business Monthly 12(12): 53-54.
  • Varela, L.G.; Elkins, R.B. (2005). Monitoring secondary pest outbreak by unknown chewing feeders. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 8-14.
  • Varela, L.G.; Smith, R.J. (2005). Monitoring vine mealybug with pheromone traps in North Coast vineyards. UCCE Sonoma County Publication.: 1 pp.
  • Vossen, P.; Varela, L.G., et al. (2005). Olive fruit fly. UCCE Sonoma County Publication.: 5 pp.
  • Varela, L.G. (2005). Oriental fruit moth mating disruption in pear orchards. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 1-6.
  • Varela, L.G. (2005). Piojos harinosos. UCCE Sonoma County Publication.: 2 pp.
  • Varela, L.G.; Smith, R.J. (2005). Seasonal development of grape, obscure and vine mealybugs of the North Coast. UCCE Sonoma County Publication.: 2 pp.
  • Smith, R.J.; Varela, L.G. (2005). Using vine mealybug traps in the North Coast. Adviser Magazine. Sacramento, CAPCA. January/February 2005: 13-14.
  • Elkins, R.; Ingels, C., et al. (2004). Control of codling moth using organically acceptable granulosis virus and spinosad products. Western Orchard Pest & Disease Management 78th Ann. Conference.: p. 33.
  • Varela, L.G.; Elkins, R.B. (2004). Monitoring techniques and survey of oriental fruit moth in pear orchards. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 1-13.
  • Van Steenwyk, R.A.; Varela, L.G., et al. (2003). Control of Codling Moth, Secondary Pests and True Bugs by Redueced Risk Insecticides. California Pear Research Reports.: 39-62.
  • Varela, L.G.; Elkins, R.B. (2003). Developing monitoring techniques for the control of pear slug. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 73-78.
  • Varela, L.G. (2003). "European fruit lecanium (Parthenolecanium corni) in-season control with low-risk insecticides." UC Plant Protection Quarterly 13(1): 5-7.
  • Varela, L.G.; Ingels, C.A., et al. (2003). Evaluation of Assail for control of codling moth. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 63-72.
  • Varela, L.G.; Pickel, C., et al. (2003). Monitoring techniques and survey of oriental fruit moth in pear orchards. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 1-18.
  • Varela, L.G. (2003). Pest Identification Sheet Series: mealybugs, sharpshooters, spider mites, thrips, Western grape leafhopper. UCCE Sonoma County Publication.: 18 pp.
  • Elkins, R.; Ingels, C.A., et al. (2003). Testing of new codling moth granulosis virus products and spinosad to supplement mating disruption in Bartlett pear orchards. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 21-36.
  • Van Steenwyk, R.A.; Varela, L.G., et al. (2002). Control of codling moth, secondary pests and true bugs by reduced risk insecticides. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 106-113.
  • Varela, L.G. (2002). Control of secondary pests in codling moth mating disrupted orchards. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 45-52.
  • Varela, L.G.; Van Steenwyk, B., et al. (2002). Evaluation of the sprayable codling moth pheromone formulation. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 117-126.
  • Varela, L.G. (2002). Olive fruit fly. UCCE Sonoma County Publication.: 3 pp.
  • Varela, L.G. (2002). "Pest management accept no substitutes." Western Fruit Grower April 2002: 20.
  • Varela, L.G. (2002). "Trap suppression using four hand-applied codling moth (Lepidoptera: Tortricidae) pheromone dispensers." UC Plant Protection Quarterly 12(1): 1-5.
  • Varela, L.G. (2002). Trap suppression using three hand-applied codling moth (Lepidoptera: Tortricidae) pheromone dispensers. Pacif. Branch Entomol. Soc. Am. 86th Ann. Meeting. South Lake Tahoe, NV,: 5 pp.
  • Varela, L.G. (2001). Biologically Intensive Pest Management Program for Pears in Mendocino County. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 114-118.
  • Elkins, R.; Van Steenwyk, B., et al. (2001). Control of Codling Moth with Virosoft Bio-Insecticide Containing Cydia pomonella. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 4-14.
  • Elkins, R.; Buch, M., et al. (2001). Education issues and needs in Western pome fruit IPM systems. Pest Management Strategic Plan for Western Pear Production for USDA and EPA.: 7 pp.
  • Varela, L.G. (2001). Evaluation of BioControl and Consep Codling Moth Pheromone Dispensers. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 119-131.
  • Varela, L.G. (2001). "How to distinguish glassy-winged sharpshooter from its look-a-like." Cal. Ag 44(4): 12.
  • Varela, L.G.; Balog, G. (2001). Trap Suppression using Different Codling Moth Pheromone Dispensers. Western Orchard Pest & Disease Management 75th Ann. Conference.: p. 143.
  • Varela, L.G. (2000). Areawide Management of Codling Moth in Mendocino Orchards. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 169-175.
  • Varela, L.G.; Ingels, C. (2000). Control of Secondary Pests in Codling Moth Mating Disrupted Orchards. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 81-90.
  • Van Steenwyk, R.A.; Elkins, R.B., et al. (2000). Control of secondary pests in codling moth mating disrupted orchards. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 59-80.
  • Garcia-Rossi, D.; Varela, L.G. (2000). Early Seasonal Population Parameters Predict Grape Leafhopper Population Size. Abstracts of Pacific Branch Entomol. Soc. of Am. 84th Annual Meeting. Costa Mesa, CA,
  • Varela, L.G. (2000). Evaluation of BioControl and Consep Codling Moth Pheromone Dispensers. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 91-102.
  • Ingels, C.; Welter, S.C., et al. (2000). Evaluation of New Codling Moth Lures and Traps in Mating Disrupted Orchards. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 103-110.
  • Van Steenwyk, R.A.; Varela, L.G., et al. (2000). Evaluation of new insecticides for true bug control. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 203-218.
  • Varela, L.G. (2000). Pear Integrated Pest Management in California. Abstracts of the Pacific Branch Entomol. Soc. Am. 84th Annual Meeting. Costa Mesa, Ca,
  • Moratorio, M.; Varela, L.G. (1999). Areawide Management of Codling Moth in Mendocino Pear Orchards in Ukiah Valley. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 145-154.
  • Varela, L.G. (1999). Integrated Pest Management Strategies. The Vineyard Manual - A Grape Grower Manual for Vineyard Development and Maintenance. Southern Sonoma County Resource Conservation District.: 395-419.
  • Varela, L.G.; Welter, S.C. (1998). Areawide Management of Codling Moth in Mendocino Orchards: Integrating and Maintaining Benefits of Selective control of Secondary Pests. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 115-125.
  • Van Steenwyk, R.A.; Varela, L.G. (1998). IPM under the Food Quality Protection Act. California Pear Research Reports. Sacramento, California Pear Advisory Board.: 61-75.
  • Varela, L.G. (1998). Pierce's Disease. CAPCA Adviser Magazine. March/April: 24-25.
  • Gubler, D.; Varela, L.G., et al. (1998). Potential of urea foliar sprays and liming for reducing pear scab. California Bartlett Pear Research Report. Sacramento, California Pear Advisory Board.: 129-147.
  • Varela, L.G.; Welter, S.C. (1997). Areawide Management of Codling Moth Using Pheromone Mating Disruption: Mendocino Pilot Project. California Pear Research Reports.: 141-152.
  • Varela, L.G. (1997). Mendocino County Area-wide Mating Disruption Implementation Project. Proceedings of the 71st Annual Western Orchard Pest and Disease Management Conference, Portland, OR. p.29-30.
  • Varela, L.G. (1997). Pierce's Disease in the North Coast. UCCE Sonoma County Publication.: 12 pp.
  • Varela, L.G.; Smith, R.J. (1997). Pierce's Disease in the North Coast Quick Field Guide. UCCE Sonoma County Publication.: 1 pp.
  • Varela, L.G. (1997). Potential for Urea Foliar Sprays and Liming for Reducing Pear Scab Inoculum. California Pear Research Reports.: 209-219.
  • Welter, S.C.; Varela, L.G (1997). Resistance Monitoring in Mating Disrupted Orchards in the Mendocino Areawide Project and Surrounding Orchards. California Pear Research Reports.: 77-80.
  • Varela, L.G.; Cowles, R.S., et al. (1997). "Spring Insecticides for Douglas Fir." Agribusiness Fieldman: 6-9.
  • Varela, L.G.; Cowles, R.S., et al. (1996). Adelgids on douglas-fir controlled with spring insecticide treatments. Abstract of the Pacific Branch Entoml. Soc. of Am. 80th Annual Meeting.
  • Welter, S.C.; Varela, L.G. (1996). Development of Resistance Management Strategies within Mating Disruption Orchards. California Bartlett Pear Research Report.: 119-128.
  • Varela, L.G.; Krebill-Prather, R. (1996). Evaluating the Effectiveness of Pest Management Training to Vineyard Farm Workers. Proceedings of the 3rd National IPM Symposium/Workshop.S. Lynch. Washington DC, USDA Misc. Pub. No. 1542:: 286.
  • Varela, L.G. (1996). Mendocino County areawide mating disruption implementation project. California Bartlett Pear Research Report.: 97-103.
  • Vossen, P.; Varela, L.G. (1996). Organic Aphid Control. UCCE Sonoma County Publication.: 2 pp.
  • Varela, L.G. (1996). Pheromone mating disruption provides effective codling moth control. Proceedings of the 92nd Annual Washington State Horticultural Association Meeting.
  • Varela, L.G. (1995). Leafrollers and what we've learned. Pear Pest Management Research Fund Newsletter.: 2 pp.
  • Varela, L.G. (1995). Mite identification in grapes: Quick Field Guide. UCCE Sonoma County Publication.: 1 pp.
  • Varela, L.G. (1995). "Oblique-banded leafroller in pears." Lake County Horticultural Notes: May
  • Varela, L.G.; Duncan, R. (1995). Use of Bacillus thuringiensis (Bt) for oblique-banded leafroller control. California Bartlett Pear Research Report.: 5 pp.
  • Varela, L.G. (1994). Control integrado de plagas, conceptos y estrategias. Spanish Session Proceedings of the Washington State Horticultural Association Annual Meeting.
  • Varela, L.G. (1994). Evaluating oblique-banded leafroller control measures in an orchard under codling moth mating disruption and Trichogramma releases for codling moth control. California Bartlett Pear Research Report.: 2 pp.
  • Varela, L.G. (1994). Integrated pest management concepts and strategies. Proceedings of the 90th Annual Washington State Horticultural Association Meeting.
  • Varela, L.G. (1994). Organophosphate resistance. Proceedings of the 90th Annual Washington State Horticultural Association Meeting.
  • Reil, W.; Elkins, R., et al. (1993). Implementation of the pheromone mating disruption program in California pear orchards. California Bartlett Pear Research Report.: 34 pp.
  • Varela, L.G. (1993). Leafrollers as secondary pests to codling moth mating disruption in pears. California Bartlett Pear Research Report.: 5 pp.
  • Flint, M.L.; Varela, L.G. (1993). Los enemigos naturales que se encuentran mas comúnmente en los viñedos. Davis, University of California Statewide IPM Project Publications.: 4 pp.
  • Varela, L.G.; Flint, M.L. (1993). Los Enemigos Naturales que se Encuentran Más Comúnmente en los Viñedos. Davis, University of California Statewide IPM Project Publications.: 4.
  • Varela, L.G. (1993). Plagas y enemigos naturales en los viñedos de la Costa Norte. Davis, University of California Statewide IPM Project Publications.: 4 pp.
  • Swezey, S.L.; Vossen, P., et al. (1993). "Planned parenthood for codling moth; does mating disruption keep populations down." California Grower April 1993: 25-27.
  • Bethell, R.; Elkins, R., et al. (1992). Implementation of the Pheromone Mating Disruption Program in California Pear Orchards. California Bartlett Pear Research Report.: 1-19.
  • Pickel, C.; Varela, L.G. (1992). Leafrollers as Secondary Pests to Codling Moth Mating Disruption in Pears. California Bartlett Pear Research Report.: 10 pp.
  • Elkins, R.; Rosetti, T., et al. (1992). Resistance Management Testing Laboratory for the North Coast. California Bartlett Pear Research Report.: 5 pp.

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